1
a
: one that rubs
b
: an instrument or object (such as a rubber eraser) used in rubbing, polishing, scraping, or cleaning
c
: something that prevents rubbing or chafing
2
[from its use in erasers]
a
: an elastic substance that is obtained by coagulating the milky juice of any of various tropical plants (as of the genera Hevea and Ficus), is essentially a polymer of isoprene, and is prepared as sheets and then dried
called also caoutchouc, india rubber
b
: any of various synthetic rubberlike substances
c
: natural or synthetic rubber modified by chemical treatment to increase its useful properties (such as toughness and resistance to wear) and used especially in tires, electrical insulation, and waterproof materials
3
: something made of or resembling rubber: such as
a
: a rubber overshoe
b(1)
: a rubber tire
(2)
: the set of tires on a vehicle
c
: a rectangular slab of white rubber in the middle of a baseball infield on which a pitcher stands while pitching
d
rubber
adjective
1
: a contest consisting of an odd number of games won by the side that takes a majority (such as two out of three)
2
: an odd game played to determine the winner of a tie
Examples of rubber in a Sentence
Recent Examples on the Web
Debra Utacia Krol, The Arizona Republic, 20 Nov. 2024
The playwright went in on the options, equipping his vehicle with private locks, rubber pedal pads, a hand throttle, heater, and side-facing jump seats in the back.
—Bryan Hood, Robb Report, 20 Nov. 2024
The watch is water resistant and finished with a black calfskin leather and rubber strap.
—Roberta Naas, Forbes, 20 Nov. 2024
Patagonia’s Worn Wear Patch Kit comes with four sticky patches that adhere to all kinds of outdoor fabrics, from nylon and vinyl to rubber and plastic.
—Abigail Wise, Outside Online, 16 Nov. 2024
See all Example Sentences for rubber 
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Noun
Since then, Pruitt has delved into the limits of metals such as anodized titanium accented with stingray skin, rubber and industrial diamonds.
—Debra Utacia Krol, The Arizona Republic, 20 Nov. 2024
The playwright went in on the options, equipping his vehicle with private locks, rubber pedal pads, a hand throttle, heater, and side-facing jump seats in the back.
—Bryan Hood, Robb Report, 20 Nov. 2024
The watch is water resistant and finished with a black calfskin leather and rubber strap.
—Roberta Naas, Forbes, 20 Nov. 2024
Patagonia’s Worn Wear Patch Kit comes with four sticky patches that adhere to all kinds of outdoor fabrics, from nylon and vinyl to rubber and plastic.
—Abigail Wise, Outside Online, 16 Nov. 2024
See all Example Sentences for rubber
Dictionary Entries Near rubber
Cite this Entry
“Rubber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rubber. Accessed 30 Nov. 2024.
Copy CitationKids Definition
rubber
1 of 2 noun
rub·ber
ˈrəb-ər 
1
: something used in rubbing, polishing, scraping, or cleaning
2
a
: an elastic substance obtained from the milky juice of various tropical plants
b
: any of various synthetic substances like rubber
3
: something made of or resembling rubber: as
a
: a rubber overshoe
b
: a rectangular slab of white rubber in the middle of a baseball infield on which a pitcher stands while pitching
4
: condom
rubberlike
adjective
-ˌlīk
rubbery
adjective
ˈrəb-(ə-)rē
rubber
2 of 2 noun1
: a contest that consists of an odd number of games (as card games) and is won by the side that takes a majority (as two out of three)
2
: an extra game played to decide the winner of a tie
Medical Definition
rubber
noun
rub·ber
ˈrəb-ər
1
: an elastic substance that is obtained by coagulating the milky juice of any of various tropical plants (as of the genera Hevea and Ficus), is essentially a polymer of isoprene, and is prepared as sheets and then dried
called also caoutchouc, india rubber
2
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